Rockwell Automation 1336T Wiring and Grounding Guide, (PWM) AC Drives - Manual (Page 129)

Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014 129
Motor Cable Length Restrictions Tables Appendix A
Reflected Wave Reduction
Guidelines (for catalog
number 1321-RWR) Follow these guidelines for catalog number 1321-RWR reflected wave reduction
solution:
• Figure 34 shows wiring for single inverter drives (PowerFlex 70 Frames
A…E; PowerFlex 700 Frames 0…6; PowerFlex 700H Frames 9…11; and
PowerFlex 700S Frames 1…11 and 13).
Figure 35 describes dual inverter drives (PowerFlex 700H/700S Frame
12).
Figure 36 is for single inverter drives that require parallel reactors because
the drive amp rating exceeds the rating of the largest available reactor
(PowerFlex 700S Frame 13).
• Configurations shown in Figure 34 and Figure 36 can be used for single
inverter drives with single or parallel cables, and single-motor or multi-
motor applications.
• The configuration shown in Figure 35 is used with dual inverter drives
with single or parallel cables, and single-motor or multi-motor
applications.
• Filter (RWR or L-R) must be connected at drive output terminals, less
than 7.6 m (25 ft) from the drive.
• See the lead length tables for output reactor and resistor selection. The
resistor specification is based on the number of parallel cables used.
• For PowerFlex 700H and 700S Frame 12 drives and some PowerFlex 700S
Frame 13 drives, two reactors are required. In this case, the resistor ohms
and watts ratings are values per phase for each reactor (see lead length
tables for output reactor selection).
• Resistor must be connected to reactor with 150 °C (302 °F) wire. Select
wire gauge based on rated resistor power from the lead length tables.
• Recommended cables include XLPE, EPR, and Hypalon.
• Maximum total cable distance for resistor wires is 6.1 m (20 ft) or
3 m (9.8 ft) per side.
Figure 34 - Filter Wiring for Single Inverter Drive
R
U
V
W
AC Drive
Catalog Number 1321-RWR
Output Reactor
Damping Resistor
Cable Motor